Fast and easy synthesis of novel Strontium apatite nanostructured phase: Structure, spectroscopy, and dielectric analysis

A simple and fast synthesis method of hydroxyapatite (Ca10(PO4)6(OH)2 (HAp) is presented in this study. By using fast microwave/hydrothermal synthesis technique, different concentrations of strontium doped HAp nanorods titled as (0.03, 0.06, 12, 0.24, 0.48) were prepared. The as-prepared Sr-doped HAp was characterized for its structure and morphology using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Spectroscopic properties were also enquired through Raman and Fourier transform infrared (FTIR) spectroscopy. The morphological studies by scanning electron microscopy showed the effective synthesis of HAp nanorods with different sizes. In addition, the dielectric properties of Sr-doped HAp were also studied by using dielectric impedance spectroscopy technique. Raman and FTIR study show an agreement with no shift in the peaks at the increasing concentrations of Sr in all Sr-HAp samples. PO4 peak was clearly seen in Raman and the basic HAp structure was revealed in all FTIR results at various concentrations of Sr. The study has been proved that mixing of diverse concentrations of Sr to the HAp matrix, can affect the degree of crystallinity of the synthesized samples. The crystallite sizes of pure HAp and with different concentrations of Sr dopped HAp were found to be 12 and 27 nm. Moreover, doping of HAp with different concentration of Sr also affect the dielectric properties of the studied samples. This newly synthesized Sr-doped HAp can be applied in different biological applications such as bone and teeth cement engineering.